Gregory, R. L. <br/><br/>
Illusion in nature and art / 
edited by R.L. Gregory and E.H. Gombrich ; with contributions by Colin Blakemore ... [et al.]. 
 - London :  Duckworth,  1973. 
 - 288 p. :  ill. (part col.) ;  24 cm. 
<br/><br/>Includes bibliographies and Index 
<br/><br/><label>ISBN: </label>0715607556 (pbk.) 0715607558  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical illusions.<br/>Visual perception.
<br/><br/><label>Dewey Class. No.: </label>152.148  / GRI 1973